Hock
Hock : Also known as the Hock Lang process, and the cumene peroxidation process. A process for converting isopropyl benzene (cumene) to a mixture of phenol and acetone; mdi- isopropyl benzene likewise yields resorcinol, and p-di-isopropyl benzene yields hydroquinone. The basis of the process is the liquid-phase air oxidation of cumene to cumene hydroperoxide: C6H5CH(CH3)2 + O2 C6H5C(CH3)2OOH ? followed by the C6H5OH + (CH3)2CO cleavage of the hydroperoxide by hot acid: C6H5C(CH3)2OOH ? The second stage can be carried out in the liquid phase by sulfuric acid, or in the gas phase by phosphoric acid adsorbed on a carrier. (Check source for accuracy of chemical formula)
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